Parts Needed to Convert a Tandem Axle Boat Trailer to Electric Brakes
Updated 10/27/2025 | Published 03/18/2025
Products Featured in This Question
Question:
Marine trailer electric brakes: I have a Trailers Inc trailer with surge brakes. Im considering upgrading to electric. I did review your parts but wondering if you can tell me if you have the necessary equipment to convert my trailer. Its a tandem axle but with brakes on one axle. Trailer tag lists model as SC-38. Load capacity 3800lb. Mfg Trailers Inc. 1986. Thankyou.
asked by: Jim B
Expert Reply:
Hey Jim! We have all the parts necessary to convert your trailer over to electric brakes. I do need some additional information from you though. I wasn't able to pull any part numbers or specifics from your trailer's model number and I'll need to know what lug pattern your hubs have and the size of the spindle.
I have listed the rest of the parts you'll need below but I need you to pull one of your hubs and check the part numbers on the bearings and give me your lug nut pattern. If your bearings don't have part numbers you'll need to use a digital caliper like item # PTW80157 to measure area's C and D on the diagram attached below.
Trailer Wiring 7-Way Upgrade Kit item # ET7WK
Bright Way Push-to-Test Trailer Breakaway Kit item # 3802308
10 Gauge Wire - Blue Primary - Per Foot item # 10-1-1
Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation item # DW05745-10
etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies item # AKEBRK-35-SA
(click to enlarge)
Product Page this Question was Asked From
Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Top Load
- Trailer Breakaway Kit
- Kit with Charger
- Top Load
- Single-Axle
- Tandem-Axle
- Push-to-Test
- Electric
- Battery Included
- 5 Ah
- 48 Inch Long
- Bright Way
more information >
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Jerred H.
10/27/2025
Hey Jim, were you able to check your hub bearings and lug pattern for the electric brake conversion on your trailer? Once you have those details, I can help confirm the right parts for your setup. Let me know what you find so we can get you squared away.